Sock



FIG. 1 is a right front perspective view of a first embodiment of a sock showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a right front perspective view of a second embodiment of a sock showing my new design;

FIG. 8 is a rear view thereof;

FIG. 9 is a bottom view thereof;

FIG. 10 is a front view thereof;

FIG. 11 is a right side view thereof; and,

FIG. 12 is a left side view thereof. 

The ornamental design for a sock, as shown and described. 